Winter-to-spring temperature dynamics in Turkey derived from tree rings since AD 1125

Ingo Heinrich, Ramzi Touchan, Isabel Dorado Liñán, Heinz Vos, Gerhard Helle

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

In the eastern Mediterranean in general and in Turkey in particular, temperature reconstructions based on tree rings have not been achieved so far. Furthermore, centennial-long chronologies of stable isotopes are generally also missing. Recent studies have identified the tree species Juniperus excelsa as one of the most promising tree species in Turkey for developing long climate sensitive stable carbon isotope chronologies because this species is long-living and thus has the ability to capture low-frequency climate signals. We were able to develop a statistically robust, precisely dated and annually resolved chronology back to AD 1125. We proved that variability of δ13C in tree rings of J. excelsa is mainly dependent on winter-to-spring temperatures (January-May). Low-frequency trends, which were associated with the medieval warm period and the little ice age, were identified in the winter-to-spring temperature reconstruction, however, the twentieth century warming trend found elsewhere could not be identified in our proxy record, nor was it found in the corresponding meteorological data used for our study. Comparisons with other northern-hemispherical proxy data showed that similar low-frequency signals are present until the beginning of the twentieth century when the other proxies derived from further north indicate a significant warming while the winter-to-spring temperature proxy from SW-Turkey does not. Correlation analyses including our temperature reconstruction and seven well-known climate indices suggest that various atmospheric oscillation patterns are capable of influencing the temperature variations in SW-Turkey.

Original languageEnglish (US)
Pages (from-to)1685-1701
Number of pages17
JournalClimate Dynamics
Volume41
Issue number7-8
DOIs
StatePublished - Oct 2013

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tree ring
winter
chronology
temperature
twentieth century
stable isotope
warming
Medieval Warm Period
climate signal
Little Ice Age
climate
carbon isotope
oscillation

Keywords

  • δC
  • Climate indices
  • Juniperus excelsa
  • Stable carbon isotopes
  • Temperature reconstruction
  • Tree rings

ASJC Scopus subject areas

  • Atmospheric Science

Cite this

Winter-to-spring temperature dynamics in Turkey derived from tree rings since AD 1125. / Heinrich, Ingo; Touchan, Ramzi; Dorado Liñán, Isabel; Vos, Heinz; Helle, Gerhard.

In: Climate Dynamics, Vol. 41, No. 7-8, 10.2013, p. 1685-1701.

Research output: Contribution to journalArticle

Heinrich, Ingo ; Touchan, Ramzi ; Dorado Liñán, Isabel ; Vos, Heinz ; Helle, Gerhard. / Winter-to-spring temperature dynamics in Turkey derived from tree rings since AD 1125. In: Climate Dynamics. 2013 ; Vol. 41, No. 7-8. pp. 1685-1701.
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